The highest day temperature in July 2025 was 107°F. The lowest night temperature was 78°F. The average values for day and night temperatures during July were 96.6°F и 82.4°F respectivly.

The average sea surface temperature in July 2025 for Jacksonville was 83.8°F. The maximum and minimum values were 79.8°F and 88.6°F respectively.

Most of the days in July are cloudy but you can also expect sunny or gloomy days.

Precipitation total in July for Jacksonville is 4.2 in. It makes july the most rainy month of the year.

The average wind speed in July is 6.4 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Jacksonville in July is 8.3 hours.